Perkins, Henry, 1803-1889, publisher, Haswell, Barrington, and Haswell, printer, McManus-Young Collection (Library of Congress) DLC · Philadelphia : H. Perkins, 134 Chestnut Street · leaf 196
d, apply the thumb to theupper side of the paw, so as to extend the claws, and, by thismeans, bring your fore-finger into contact with one of the bonesof the leg, where it joins the paw; when, from the knob or endof this bone, the ringer slightly pressing on it, you may feel dis-tinctly successive…
Scientific recreations
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